diff options
| -rw-r--r-- | fs/nfs/dir.c | 22 | ||||
| -rw-r--r-- | fs/nfs/nfs4proc.c | 35 | ||||
| -rw-r--r-- | include/linux/nfs_fs.h | 5 |
3 files changed, 24 insertions, 38 deletions
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index b332c527d95d..2b5e611352c5 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -1815,7 +1815,7 @@ static struct nfs_access_entry *nfs_access_search_rbtree(struct inode *inode, st return NULL; } -int nfs_access_get_cached(struct inode *inode, struct rpc_cred *cred, struct nfs_access_entry *res) +static int nfs_access_get_cached(struct inode *inode, struct rpc_cred *cred, struct nfs_access_entry *res) { struct nfs_inode *nfsi = NFS_I(inode); struct nfs_access_entry *cache; @@ -1882,7 +1882,7 @@ found: nfs_access_free_entry(entry); } -void nfs_access_add_cache(struct inode *inode, struct nfs_access_entry *set) +static void nfs_access_add_cache(struct inode *inode, struct nfs_access_entry *set) { struct nfs_access_entry *cache = kmalloc(sizeof(*cache), GFP_KERNEL); if (cache == NULL) @@ -1930,6 +1930,24 @@ out: return -EACCES; } +static int nfs_open_permission_mask(int openflags) +{ + int mask = 0; + + if (openflags & FMODE_READ) + mask |= MAY_READ; + if (openflags & FMODE_WRITE) + mask |= MAY_WRITE; + if (openflags & FMODE_EXEC) + mask |= MAY_EXEC; + return mask; +} + +int nfs_may_open(struct inode *inode, struct rpc_cred *cred, int openflags) +{ + return nfs_do_access(inode, cred, nfs_open_permission_mask(openflags)); +} + int nfs_permission(struct inode *inode, int mask, struct nameidata *nd) { struct rpc_cred *cred; diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 2919271a983a..5aa0dd1e1bdf 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -65,7 +65,6 @@ static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *) static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry); static int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct nfs4_exception *exception); static int nfs4_wait_clnt_recover(struct rpc_clnt *clnt, struct nfs_client *clp); -static int _nfs4_do_access(struct inode *inode, struct rpc_cred *cred, int openflags); static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr); static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr); @@ -454,7 +453,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) memcpy(stateid.data, delegation->stateid.data, sizeof(stateid.data)); rcu_read_unlock(); lock_kernel(); - ret = _nfs4_do_access(state->inode, state->owner->so_cred, open_mode); + ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); unlock_kernel(); if (ret != 0) goto out; @@ -948,36 +947,6 @@ static int _nfs4_proc_open(struct nfs4_opendata *data) return 0; } -static int _nfs4_do_access(struct inode *inode, struct rpc_cred *cred, int openflags) -{ - struct nfs_access_entry cache; - int mask = 0; - int status; - - if (openflags & FMODE_READ) - mask |= MAY_READ; - if (openflags & FMODE_WRITE) - mask |= MAY_WRITE; - if (openflags & FMODE_EXEC) - mask |= MAY_EXEC; - status = nfs_access_get_cached(inode, cred, &cache); - if (status == 0) - goto out; - - /* Be clever: ask server to check for all possible rights */ - cache.mask = MAY_EXEC | MAY_WRITE | MAY_READ; - cache.cred = cred; - cache.jiffies = jiffies; - status = _nfs4_proc_access(inode, &cache); - if (status != 0) - return status; - nfs_access_add_cache(inode, &cache); -out: - if ((cache.mask & mask) == mask) - return 0; - return -EACCES; -} - static int nfs4_recover_expired_lease(struct nfs_server *server) { struct nfs_client *clp = server->nfs_client; @@ -1381,7 +1350,7 @@ static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct /* If the open_intent is for execute, we have an extra check to make */ if (nd->intent.open.flags & FMODE_EXEC) { - ret = _nfs4_do_access(state->inode, + ret = nfs_may_open(state->inode, state->owner->so_cred, nd->intent.open.flags); if (ret < 0) diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h index 5c200fd8c652..5b42fef0baf0 100644 --- a/include/linux/nfs_fs.h +++ b/include/linux/nfs_fs.h @@ -292,9 +292,6 @@ extern int nfs_refresh_inode(struct inode *, struct nfs_fattr *); extern int nfs_post_op_update_inode(struct inode *inode, struct nfs_fattr *fattr); extern int nfs_getattr(struct vfsmount *, struct dentry *, struct kstat *); extern int nfs_permission(struct inode *, int, struct nameidata *); -extern int nfs_access_get_cached(struct inode *, struct rpc_cred *, struct nfs_access_entry *); -extern void nfs_access_add_cache(struct inode *, struct nfs_access_entry *); -extern void nfs_access_zap_cache(struct inode *inode); extern int nfs_open(struct inode *, struct file *); extern int nfs_release(struct inode *, struct file *); extern int nfs_attribute_timeout(struct inode *inode); @@ -382,6 +379,8 @@ extern const struct file_operations nfs_dir_operations; extern struct dentry_operations nfs_dentry_operations; extern int nfs_instantiate(struct dentry *dentry, struct nfs_fh *fh, struct nfs_fattr *fattr); +extern int nfs_may_open(struct inode *inode, struct rpc_cred *cred, int openflags); +extern void nfs_access_zap_cache(struct inode *inode); /* * linux/fs/nfs/symlink.c |